Effect of using Agrogeotextiles on soil carbon sequestration in the Indian Himalayas


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Authors

  • PLABANI ROY ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • RANJAN BHATTACHARYYA ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • D R BISWAS ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • RAMANJEET SINGH ICAR-Indian Institute of Soil and Water Conservation, Dehradun, Uttarakhand
  • T K DAS ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • D K SHARMA ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • SUNITA YADAV ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • ANN MARIA JOSEPH ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110 012, India
  • PRAMOD JHA ICAR-Indian Institute of Soil Science, Bhopal, Madhya Pradesh

https://doi.org/10.56093/ijas.v93i7.136929

Keywords:

Agrogeotextiles, Arundo donax, C sequestration, Carbon management index

Abstract

Agrogeotextiles (AGT) have potential for soil conservation, but limited information is available on effect of AGT on C sequestration and soil aggregation in Indian Himalayan region (IHR). Hence, the study was conducted on a 4% slope at Selakui, Dehradun in a maize-based cropping system where Arundo donax mats were used as AGT mats for soil conservation. Soil sampling was done in December 2021 after vegetable pea harvest and results indicated that in 0–15 cm soil depth, Maize + Arundo donax mat (10 cm thick) on 0.5 m vertical interval vegetable pea - wheat (M+A10D0.5-V-W) had ~23% higher total soil organic C (TSOC) in bulk soils than the control (M-W) plots. Plots with Arundo donax mats exhibited ~12% higher TSOC than plots without the mats. Plots under M+A10D0.5-V-W and maize-vegetable pea-wheat under bench terracing (M-V-W)B showed similar impacts on C sequestration. M+A10D0.5-V-W plots had ~36% greater macroaggregate and ~35% higher mean weight diameter (MWD) than M-W plots in the 0–15 cm soil depth. Microbial biomass C (MBC) enhanced by ~86% under M+A10D0.5-V-W over M-W in the 0–15 cm soil depth due to higher root biomass, root exudates and metabolizable C. Thus, microbial quotient (MQ) was also increased. Mean annual soil loss value of 2020–2021 and 2021–2022 ranged from 0.4 t/ha/yr to 2.9 t/ha/yr which was correlated with carbon management index (CMI) value. The CMI was ~38% higher in M+A10D0.5-V-W plots than M-W due to emplacement of Arundo donax mats, resulting in better soil aggregate stability. Thus, AGT application can be a potential practice for soil aggregation stability and C sequestration in the IHR. Conservation soil practices along with AGT are more profitable than conservation soil practices alone which had ~10% less benefit : cost ratio (B:C) on 4% land slopes of IHR.

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Submitted

2023-05-27

Published

2023-08-08

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Articles

How to Cite

ROY, P., BHATTACHARYYA, R., BISWAS, D. R., SINGH, R., DAS, T. K., SHARMA, D. K., YADAV, S., JOSEPH, A. M., & JHA, P. (2023). Effect of using Agrogeotextiles on soil carbon sequestration in the Indian Himalayas. The Indian Journal of Agricultural Sciences, 93(7), 768–773. https://doi.org/10.56093/ijas.v93i7.136929
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